In 1997 FEMA released its first edition of a commercial off-the-shelf loss and risk assessment software package built on GIS technology. This product was termed HAZUS97. The current version is Hazus-MH V2.0 where MH stands for 'Multi-Hazards' and was released in 2004. Currently, Hazus can model four types of hazards: flooding, hurricanes, coastal surge, and earthquakes. The model estimates the risk in three steps. First, it calculates the exposure for a selected area. Second, it characterizes the level or intensity of the hazard affecting the exposed area. Lastly, it uses the exposed area and the hazard to calculate the potential losses in terms of economic losses, structural damage, etc.
Although Hazus-MH itself is free, it requires the users to have ArcGIS with ArcView license level.  In addition, ArcGIS Spatial Analyst extension is required for Flood Model. Further more it currently is only available for use with ArcGIS version 10.0 (Current version is 10.2).
- Mapping results from the Advanced Engineering Building Module (AEBM) for earthquake hazards Salt Lake Community - a descriptive workaround
Hazus User Group Community
Hazus has a substantial user group community that includes a Hazus LinkedIn group and several Hazus User Groups across the nation. Its reach includes 40 User Groups managed by 38 User Group Leaders. 
Each Hazus User Group conducts its own training, holds seminars, and occasionally holds group-wide User Group Conference calls.
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